From: Steven Noonan <steven@uplinklabs.net>
Date: Fri, 4 Jul 2014 02:43:56 +0000 (-0700)
Subject: networkd: don't clear dhcpv6 lease timers if there's no previous lease
X-Git-Tag: v216~763
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=commitdiff_plain;h=b1e1238fb3af77419eca704fb64f68a313954734;p=elogind.git

networkd: don't clear dhcpv6 lease timers if there's no previous lease

If client->lease is NULL, dhcp6_lease_clear_timers will cause a segmentation
fault.
---

diff --git a/src/libsystemd-network/sd-dhcp6-client.c b/src/libsystemd-network/sd-dhcp6-client.c
index 8fdbbfe32..a83778e93 100644
--- a/src/libsystemd-network/sd-dhcp6-client.c
+++ b/src/libsystemd-network/sd-dhcp6-client.c
@@ -708,7 +708,8 @@ static int client_receive_reply(sd_dhcp6_client *client, DHCP6Message *reply,
                         return 0;
         }
 
-        dhcp6_lease_clear_timers(&client->lease->ia);
+        if (client->lease)
+            dhcp6_lease_clear_timers(&client->lease->ia);
 
         client->lease = sd_dhcp6_lease_unref(client->lease);
         client->lease = lease;